Awsome
This game has a bit of a learning curve ... but once you get the hang of it, is completely awesome. It reminded me of a game called "The Incredible Machine" mixed together w/ tower defense. Very cool idea.
Short of the directions that are already built into the game, one way you could get the point accost on how stuff works is by starting off w/ a pre-made level maybe ... one with pre-built traps. Just a thought.